baber/WOPTO huggingface dataset:
Patent GB-1344328-A (GB)
Title: Time-base generator circuit
IPC: H03K4/793
Filed: 1971-07-21
Abstract: 1344328 Sawtooth generator triggering circuits TESLA NARODNI PODNIK 21 July 1971 [22 July 1970] 34213/71 Heading H3T A triggered sawtooth wave generator comprises an integrator 36 initiated by a signal from a transformer 29 secondary via a triggering circuit 30, 31 the output of the integrator being fed via one threshold switch 32 to the triggering circuit to reset the integrator at a preset sawtooth signal amplitude and another threshold switch 34 which holds off further trigger signals arriving from transformer 29 until a period after the integrator has been reset. The other threshold switch may be a transistor 34, a differential amplifier, a bi-stable circuit or monostable circuit the timing components 14, 13 for producing the hold-off period being unnecessary in the case of the monostable circuit. The switch 32 may be a differential amplifier or bi-stable circuit. A pulse at 30 operates tunnel diode 17 to switch on transistor 31. A sawtooth signal is produced at 2, the amplitude of which is set by potentiometer 23. The hold-off point is set by potentiometer 24. This cuts off transistor 30 via transistor 34 to block any further triggering pulses coming from the transformer 29. A further embodiment (Fig. 3, not shown) uses the second threshold switch 32 for the other feedback path 34 to the transformer to hold off further trigger pulses. A diode (37) is used for blocking.
Patent GB-930315-A (GB)
Title: Manifolding assembly
IPC: B41L1/22
Filed: 1959-10-09
Abstract: 930,315. Cutting webs. J. G. KERR. Oct. 9, 1959 [Oct. 14, 1958], No. 34298/59. Class 31 (1). [Also in Group XV] Manifolding assemblies (see Group XV) each comprising a paper sheet 6 and superposed carbon sheet 4, are manufactured from a web of paper 32, having spaced die-cut lines 38 and apertures 40, connected to a web of carbon paper 34 by spots of adhesive 36, and cut along lines 44 into separate assemblies by a rotary knife. The apertures 40 are used to control the operation of the rotary knife and facilitate the removal of the tabs 48 by a finger which engages each aperture in turn. Specification 707,072 is referred to.
Patent GB-619094-A (GB)
Title: Improvements in and relating to the control of direct-current motors by means of grid-controlled rectifiers
IPC: H02P7/292
Filed: 1946-11-20
Abstract: 619,094. Rectifying. BROOKE, W., and BALDWIN, H. T. Nov. 20, 1946, No. 34335. Drawings to Specification. [Class 38 (ii)] [Also in Group XXXVII] A control system wherein a direct-current motor is supplied from alternating-current mains through two groups of grid-controlled rectifier valves, which are each arranged to be rendered respectively conductive or non- conductive so as to energize the motor in opposite directions, is provided with means to produce such a phase-shift of the grid voltages of the valves which are to be made inactive that the possibility of the firing of these valves due to transient currents is avoided. Condensers are introduced into the grid circuits of the inactive valves so as to produce a phaseshift of 180 degrees therein, means being provided to short-circuit these condensers during the active operation of the valves. The shortcircuiting of the condensers may be effected. by a multi-polar switch or a remotely-operated relay.
Patent GB-1517176-A (GB)
Title: Timing circuit for electric undervoltage detecting device and latch
IPC: H02H3/24
Filed: 1975-08-20
Abstract: 1517176 Transistor switching circuits WESTINGHOUSE ELECTRIC CORP 20 Aug 1975 [29 Aug 1974] 34535/75 Heading H3T [Also in Division H2] A switching circuit Q1-Q4 is responsive to variations in a voltage VD, which also constitutes its own supply voltage, to remove the triggering voltage from a thyristor SCR1 when the voltage falls below a threshold level and switch it on again when the voltage is restored. When the voltage is high, Q2 conducts and Q1 is off, but when the voltage falls the fixed bias provided by zener diode D3 switches Q1 on (thereby switching Q2 off). With Q I on, Q3 can conduct to disable Q4 and thus remove the triggering voltage. Another voltagesensitive switch is also shown (transistor Q5).
Patent GB-810526-A (GB)
Title: Method and apparatus for making visible photographic negatives as positives
Inventor: MEERKAMM OTTO
IPC: G03C5/10
Filed: 1956-11-12
Abstract: 810,526. Photographic processes. METEOR APPARATEBAU P. SCHMECK G. m. b. H. Nov. 12, 1956, No. 34548/56. Class 98(2) [Also in Group XL (a)] Apparatus for obtaining a positive image of a photographic negative by means of I.R. light passed through the negative on to a luminescent screen excited by non-visible U.V. light comprises a mercury vapour lamp 7 irradiating the luminescent screen 6 with U. V. light of 360-400 mÁ wave length,a source 1 emitting I.R. light through the condenser system 2, having a filter 3 (Schott-filter R.G.9) transmitting light of 780-900 mÁ, and then through the negative 4 and optical system 5 on to the mirror 8, and screen 6. A blue filter 9 (Schott-filter B.G. 18), filtering substantially all light with wave lengths greater than about 600 mÁ, is positioned between the observer and the screen 6. The screen 6 comprises activated zinc sulphide phosphors of very fine granulation having two regions of maximum quenching capacity, one at about 780-900 mÁ, and the other at about 1,300 mÁ.
Patent GB-186545-A (GB)
Title: Key case
IPC: A45C11/32
Filed: 1921-12-23
Abstract: 186,545. Bowen, F. G. Dec. 23, 1921. Key holders.-The key-rings in a key case are so mounted as to allow of lateral and rotative movement in the operative position as well as pivotal movement to that position. The metal plate 3 secured to the case 1 by rivets 5 has tapered slots 6 and is rolled at its end to form a cylindrical retaining-portion 7 for the balls 9 on the key-rings 8. The narrowed ends of the slots prevent lateral movement of the rings in the closed position.
Patent GB-857409-A (GB)
Title: Acid electrolytic copper-plating baths
IPC: C25D3/38
Filed: 1958-10-29
Abstract: 857,409. Electrolytic copper-plating baths. DEHYDAG DEUTSCHE HYDRIERWERKE G.m.b.H. Oct. 29, 1958 [Dec. 17, 1957], No. 34608/58. Class 41 An acid electrolytic copper plating bath includes an organic sulphonic acid having one or more azido groups or a salt of such an acid, preferably an azido-alkane sulphonic acid, e.g. 3-azido 2-hydroxy-propane sulphonic acid, pazido-benzene sulphonic acid. These substances suppress the formation of anode mud. Other optional additions are Rustering agents, e.g. N N. diethyl dithio carbamic acid ethylester- #-sodium sulphonate; and ductility agents, e.g. 1 : 3 bis-(dibutylamino)-propanol-2. Iron, steel, brass or bronze may be plated at 15 to 50C. at C.D. up to 12À5 A.sq. dm.
Patent GB-393950-A (GB)
Title: Improvements in or relating to television image producing apparatus
IPC: H04N7/06
Filed: 1931-12-14
Abstract: 393,950. Television. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.- (Assignees of Gray, F. ; 243. West 101st Street, New York, U.S.A.) Dec. 14, 1931, No. 34629. Convention date, Dec. 27, 1930. Addition to 393,657. [Classes 39 (i) and 40 (iii).] In a receiver R<1> for simultaneously reproducing different areas, the signals are distributed to stationary strip light sources 25. The light sources are combined in a unitary glow lamp 26, which has an anode 32 and a plurality of strip cathodes 25, and the sets of signals are simultaneous supplied to successive cathodes by commutators 48, 51. The image field is scanned by a rotating disc 54 with two or more sets of apertures 55, 56 in spirals. At the transmitter T<1>, light passing through two spiral sets of apertures 42, 43 is deflected to respective lightsensitive cells 45, 46 by prisms 44 behind each aperture. Alternatively the transmitter is similar to that described in the parent Specification, Fig. 1 (not shown). Specifications 376,309 and 385,591 are also referred to.
Patent GB-1196932-A (GB)
Title: Ink Droplet Recording
IPC: H04N1/034
Filed: 1967-07-28
Abstract: 1196932 Facsimile recording apparatus XEROX CORP 28 July 1967 [1 Aug 1966] 34734/67 Index B6P 9A6 [Also in Division G1] Electrically conductive ink in a capillary tube 10 located in a magnetic field system 14 is subjected to a force by the passage of current through the ink between electrodes 16, 18 whereby ink is ejected from the tube for the purpose of making a recording. The invention is described as applied to a helical scan drum recorder, Fig.1 (not shown), in which the current applied through electrodes 16, 18 comprises signal pulses organising from a remote source, such as a fascimile scanner, a computer or magnetic tape store. Electrolytic effects are prevented by periodic reversal of both the direction of current flow through electrodes 16, 18 and the direction of current flow in the electromagnet of field system 14.
Patent GB-1320374-A (GB)
Title: Apparatus for continuously advancing and forming a cover material for padded articles
IPC: B32B7/09
Filed: 1970-07-17
Abstract: 1320374 Laminated products MECAMECCANOTECNICA CASSANESE SNC 17 July 1970 [19 July 1969] 34769/70 Heading B5N [Also in Divisions B6 and D1] A padded article comprises a cover material 2 of fabric or plastics material, strips 14 of padding, e.g. expanded PVC or rubber foam and an unspecified base material 15. The cover material is given the corrugated form shown, before being stitched to the base material; by passing it over a table (1, Fig. 1, not shown) provided with parallel grooves into which the material is forced by profiled chains (12).
Patent GB-1500884-A (GB)
Title: Process for the manufacture of copper catalysts
IPC: C07C45/00
Filed: 1976-08-20
Abstract: 1500884 Hydrated copper oxide RUHRCHEMIE AG 20 Aug 1976 [28 Aug 1975] 34861/76 Heading C1A [Also in Divisions B 1 and C2] Hydrated copper oxide suitable for use as a catalyst is obtained by reacting an aqueous copper salt solution with an aqueous alkali metal or ammonium carbonate solution, and treating the resulting basic carbonate suspension with aqueous alkali metal hydroxide solution at elevated temperature. Promoters, such as magnesium and/or chromium hydroxides, may be present in the product and are produced by incorporating corresponding salts in the copper salt solution.
Patent GB-1392499-A (GB)
Title: Merocyanine dyes
IPC: C09B23/10
Filed: 1972-07-26
Abstract: 1392499 Merocyanine dyes ILFORD Ltd 26 July 1973 [26 July 1972] 34929/72 Heading C4P [Also in Division G2] Merocyanine dues for sensitizing silver halide emulsions are of formula (in which R 1  is H or optionally substituted alkyl; R 2-7  are each H, 1-4C alkyl or aryl). In specific dyes R 1  is ethyl, methyl, H or sulphopropyl and R 2-7  are each H, methyl or phenyl. The dyes are prepared by a conventional condensation reaction.
Patent GB-323876-A (GB)
Title: Improvements in sleeves for garments
IPC: A41D27/10
Filed: 1928-11-27
Abstract: 323,876. Abrahams, I., and Express Rubber Co., Ltd. Nov. 27, 1928. Sleeves ; coats.-Sleeves particularly for ladies' coats, waterproofs and the like are made with a turned back or cuff portion 2 integral with the main part 1 so as to expose a continuation of the lining or inner surface and so as to make the length of the sleeve adjustable to the wearers' requirements. Where rubber reinforced fabric is used the lining is arranged to produce an artistic effect. Where an independent lining is used a narrow hem 3 may be used to connect the two materials together. Where a single thickness of material is used the edge may be strengthened by hemming.
Patent GB-175944-A (GB)
Title: Buttonhole cutting and sewing machine
IPC: D05B37/02
Filed: 1920-11-29
Abstract: 175,944. Fairweather, W., (Singer Manufacturing Co.). Nov. 29, 1921. Button-hole sewing-machines; button-holes, cutting. - Punch and die cutters 61, 62 cutting a button-hole at a distance from the stitching position are operated positively in both cutting and disengaging. The cutters are carried by levers 59, 60, pivoted at 58 on a slide 57 and having bowls 63, 64, which engage in slots 65, 66 in levers 67, 68 pivoted at 69 and oscillated positively in both directions by means of cam-grooves 71. 72 in a pair of discs. The cutters are shown applied in a machine, as described in Specification 173,678, which sews a button-hole disposed transversely of the machine and in which the work-clamp is lifted clear of a fixed throat-plate in moving between cutting and stitching positions. In its idle position, the lower die cutterrests above the level of the lower clamping plate 24 and is depressed below that level prior to the cutters being moved forward to cutting position. The downward movement of the cutter lever is communicated to a lever 80 pivoted at 81 and is used to cause that lever to move the clampclosing lever 40 to close the work-clamp. The cutter shaft is operated as described in Specification 146,587.
Patent GB-1126763-A (GB)
Title: Improvements in identification devices for animals
IPC: A01K11/00
Filed: 1965-08-17
Abstract: 1,126,763. Animal nose rings. I. D. COUZENS. 15 Nov., 1966 [17 Aug., 1965], No. 35311/65. Heading A1M. An identification device for an animal comprises a nose ring which carries or includes a plate extending the general plane of the ring and situated substantially wholly within the boundary of the ring and formed or provided with an identifying indicium. As shown the nose ring is formed by an arcuate member 1 formed from cylindrical metal rod, and a plate 2 formed with a stencil-type cut-out, the free end of the rod being bifurcated to receive the adjacent end of the plate. The rod and plate have apertures 9, 10 to receive a securing bolt. In a modification the plate is substantially semi-circular and provided with spaced tabs on its arcuate perimeter which are bent around a conventional nose ring so that the plate fills slightly more than half the ring area. The plate 2 may be coloured.
Patent GB-937650-A (GB)
Title: Improvements in or relating to gas purifying apparatus
Inventor: INGHAM CLEMENT
IPC: B01D53/48
Filed: 1958-11-04
Abstract: In a method of pre-heating a catalyst chamber and heat exchanger of a gas purifying system, hot flue gases are circulated from a separate combustion-chamber through the heat exchanger and the catalyst chamber in a circuit which additionally contains means for maintaining the temperature of the flue gases.  The method may be effected in apparatus comprising a preheating furnace and means for correcting the furnace to a catalyst chamber and a heat exchanger in a gas purifying system and means for circulating the hot flue gases from the furnace through the catalyst chamber and heat exchanger of the system and back to the furnace.  As shown, heat exchangers 10, 11 and catalyst chamber 12 are interconnected such that gas to be purified flows from a mains supply 13 to one side of exchangers 10, 11 and through chamber 12, returning via the other side of <PICT:0937650/III/1> exchangers 10, 11 to outlet 14.  Pre-heated gases are supplied by gas fired furnace 17.  Valve 22 interposed in pipe 23 connecting outlet 24 of chamber 12 and exchanger 11, and valves 28, 29 are interposed in pipes 25, 27.  During pre-heating, valves 15, 16 and 22 are closed and valves 28, 29 and 31 are opened. Furnace 17 is started up and fan 26 is operated.  A vent 35 to atmosphere is provided in pipe 27 between the fan inlet and valve 29 so as to maintain substantially atmospheric pressure in the system. In an example, starting temperature is 20 DEG C., flue gas temperature is 400 DEG C. until the catalyst chamber temperature reaches 300 DEG C. and temperature at the outlet 33 reaches 100 DEG C.  Specification 937,301 is referred to.
Patent GB-1088228-A (GB)
Title: Beading suitable for mounting on the edge portion of a plate or web
IPC: B60J10/80
Filed: 1965-08-19
Abstract: 1,088,228. Reinforcing edges. GEBR. HAPPICH G.m.b.H. Aug. 19, 1965 [Nov. 14, 1964], No. 35546/65. Heading B5K. [Also in Divisions B7, and E1-E2] Beading has a rigid, trough - shaped outermost casing 1 (Fig. 1) having side walls defining a mouth 7, a lining of material 2 therein, which is resilient in compression, being in contact with their opposed internal faces. There may be at least one sealing lip 5. An insert of springy flexible material 6 is embedded in the lining. In one form (Fig. 4) where the beading is clamped to a roof-terminating ledge the beading has a profiled extension 11 having a free end with a bead 12 and extends from the casing to form a gutter with a roof covering 9. In another form the gutter is formed by a bilateral extension of the casing 1. In a form for sealing a vehicle window well (Fig. 6) the extension 11 is made of two extended casing walls and pile fabric 18 is on the outside surface of the casing 1. Figs. 7 and 8 show bilateral extensions and a unilateral extension of the casing 1, which are attached to a web 21 on a base-plate 22 with facing panels 24 and a plate 26 with a facing panel 24, respectively. In a final form extensions of the casing sidewalls are bent toward the centre of the beading crown to form an undercut recess in which is a sealing strip.
Patent GB-502130-A (GB)
Title: Improvements in or relating to noise preventing or damping devices for pressure flushing valves or cocks for water closets
IPC: E03D9/14
Filed: 1937-12-22
Abstract: 502,130. Valve accessories; regulating fluid flow. MENGERINGHAUSEN, M. Dec. 22, 1937, No. 35559. Convention date, Dec. 24, 1936. Addition to 464,954. [Class 135] The noise - preventing device described in the parent Specification is modified for use with a pressure flushing valve or cock by the provision of a one-way valve 13 for admitting air to the flushing pipe, the one-way valve being arranged in a member 15 which is connected to the discharge side of the flushing valve and has one or more channels or conduits 16 which offer a resistance three to five times that of the flushing valve when fully open..The flushing valve shown is of conventional type and comprises a main valve 5 integral with a piston moving in an actuating chamber 7, and a pilot valve 10 operated by a handle 11. The valve seat aperture 6 is considerably larger than the cross-section of the supply pipe 4 and is three to five times as great as the effective crosssection of the conduits 16. The latter are mounted within a flushing pipe 19. The member 15 has radial air intake channels 17 leading to a chamber 20. The valve 13 opens to admit air to the outlet chamber 14 when a vacuum occurs therein so that foul water is not drawn back up the flushing pipe.
Patent GB-503986-A (GB)
Title: Improvements relating to grab cranes
IPC: B66C23/10
Filed: 1937-12-23
Abstract: 503,986. Jib cranes. COWANS, SHELDON, & CO., Ltd., and PEARSON, J. B. Dec. 23, 1937, No. 35577. [Class 78 (iv)] A crane is provided with independently-operable grab-hoisting gear and load-hook operating-gear and is fitted with means for stowing the grab on the framework when not in use without disconnecting the hoisting and operating ropes during the use of the alternative load-hookgear. The Figure shows a cradle 6 for stowing the grab, pulleys 3, 2, 1 for the grab ropes 10 and pulleys 3a, 2a, for the rope 9 carrying the load hook 8. When the grab is in use, the pulleys 3, which are mounted in a pair of sliding carriages, are locked in position coaxial with the pulleys 3a, but are freed to slide up and down as the jib is luffed when the grab is stowed. The carriages may be specially loaded if necessary. Both sets of operating-gear preferably incorporate level-luffing mechanism of known type. As an alternative to locking the pulleys 3, they may abut against an upper buffer, which allows them to move downwards and take up slack in the grab ropes should the grab inadvertently seat on the material while the jib is being luffed.
Patent GB-1280456-A (GB)
Title: Improvements relating to the spinning of textile yarns
Inventor: GREENWOOD ROBERT
IPC: D01H4/30
Filed: 1968-07-25
Abstract: 1280456 Open end spinning; stapling TMM (RESEARCH) Ltd 25 July 1969 [25 July 1968] 35612/68 Headings D1D and D1F A filament or tow of filaments 11 is advanced to a severing station, e.g. a rotor 13 with helical blades 14 severing the filament against an anvil, and the staple fibres thus formed are conveyed to an open-end spinning chamber 20 whence they are removed as a spun yarn. After being severed the fibres are drafted by rollers 27, 28, 29, 30 before passing to an inlet tube 19 for the chamber. The cutter and anvil may be replaced by two pairs of successive rollers, the second pair being driven at a speed in excess of the first so that the filaments are stretch broken. The drafting section may be replaced by a driven roller covered with saw toothed wire clothing or needles to engage and forward the staple fibres.
Patent GB-522377-A (GB)
Title: Improvements in or relating to focusing systems for electron beams
IPC: H01J29/68
Filed: 1938-12-07
Abstract: 522,377. Permanent magnets. FERRANTI, Ltd., TAYLOR, M. K., and WOOD, H. Dec. 7, 1938, No. 35633. [Class 35] [Also in Group XL] A magnet 1 for use in focusing in a cathode ray tube is annular and of opposite polarity at its outer periphery to its inner periphery. It may be concave and of various cross sections ; it may have pole-pieces on its inner or outer periphery and carry pieces 22 of magnetic material for correction of astigmatism. It may be an alloy of iron nickel and aluminium with or without cobalt. Specification 472,165, [Group XL], is referred to.
Patent GB-1124380-A (GB)
Title: Artificial filaments having a male screw shape and method of manufacture thereof
IPC: D01D5/20
Filed: 1966-08-09
Abstract: 1,124,380. Melt spinning filaments of male screw shape. TOYO RAYON K.K. 9 Aug., 1966 [9 Aug., 1965; 15 Nov., 1965; 22 July, 1966], No. 35659/66. Heading B5B. Synthetic filaments comprise a melt-spinnable synthetic polymer having a male screw shape wherein the ratio (p/d) of the pitch (p) to the outer diameter (d) of the screw thread is in the range of from 0À3 to 15, and the ratio (h/d) of the depth of the thread (h) to outer diameter (d) of the screw thread is in the range of from 0À03 to 0À4. The polymer may be a polyamide such as polyhexamethylene adipamide having a relative viscosity, measured in 98% sulphuric acid at 25‹ C., of 2À2 to 6À0 or a polycaprolactam of relative viscosity, measured as above, of 2 to 9. The filaments may be drawn and thereby molecularly oriented. The p/d value and the h/d value of the filaments is preferably in the range 0À5 to 10 and 0À05 to 0À35 respectively. The filaments may be made by melt-spinning the polymer through the or each extrusion orifice of circular cross-section in a spinneret under an extrusion condition such that the shear stress to which the polymer is subjected during its passage through the or each extrusion orifice of the spinneret is such that with the relative viscosity of the polymer lying within certain limits the extrudate undergoes melt fracture and thereafter contacting the extruded filamentary melt with a liquid which is inert to the polymer and at a temperature sufficiently low to solidify the filamentary melt and fix it in a screw form. The filaments may be made by melt-spinning nylon 66 of relative viscosity 2À2 to 6À0 under extrusion conditions such that the shear stress in the or each extrusion orifice of the spinneret is expressed by the formula:- wherein # r  represents the relative viscosity of the polymer and # represents the shear stress expressed in dynes/cm.<SP>2</SP>. The filaments may be made by melt-spinning nylon 6 (polycaprolactam) under extrusion conditions such that the shear stress is The term "melt fracture" is defined as a phenomenon in which the outer shape of an extrudate becomes irregular when a difficultly fusible polymer or a polymer having a very high melt viscosity is melt-extruded through a capillary tube. The shear stress (# w ) is expressed by the formula:- where P represents the extrusion pressure, R is the diameter of the extrusion orifice, L is the length of the orifice, and n is a tube-length compensating coefficient.